________ is the evolutionary history of a species or group of related species
a. Cladistics
b. Phenetics
c. Phylogeny
d. Cladogram
c
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Laboratory strains of E. coli ____
a. undergo meiosis b. divide every 2 hours c. can be transformed but not conjugated d. have been engineered to produce human insulin e. are harmful to humans
In sexually promiscuous primates, sexually pairings are not random.
Indicate whether the statement is true or false.
Bicarbonate ions in the blood can absorb hydrogen ions, keeping pH balanced. Bicarbonate is acting as a ________ in blood.
A. alkaline B. base C. buffer D. acid
What might happen if a functional copy of the TP53 gene is not present in a cell?
a) the cell may make no p21 inhibitory protein, preventing the cell from passing the G1 checkpoint and no Bax protein, which would prevent the cell from initiation apoptosis b) all of the choices are correct c) the cell proceeds to S phase before it is ready and before DNA repairs are completed d) abnormal cells with the potential to become malignant are produced